collectTypeExtensionsOptions example

$type->getInnerType()->configureOptions($ownOptionsResolver = new OptionsResolverWrapper());
        $this->ownOptions = array_diff($ownOptionsResolver->getDefinedOptions(), $optionsResolver->getDefinedOptions());
        $overriddenOptions = array_intersect(array_merge($ownOptionsResolver->getDefinedOptions(), $ownOptionsResolver->getUndefinedOptions()), $optionsResolver->getDefinedOptions());

        $this->parentOptions = [];
        foreach ($this->parents as $class => $parentOptions) {
            $this->overriddenOptions[$class] = array_intersect($overriddenOptions, $parentOptions);
            $this->parentOptions[$class] = array_diff($parentOptions, $overriddenOptions);
        }

        $type->getInnerType()->configureOptions($optionsResolver);
        $this->collectTypeExtensionsOptions($type, $optionsResolver);
        $this->extensionOptions = [];
        foreach ($this->extensions as $class => $extensionOptions) {
            $this->overriddenOptions[$class] = array_intersect($overriddenOptions, $extensionOptions);
            $this->extensionOptions[$class] = array_diff($extensionOptions, $overriddenOptions);
        }

        $this->overriddenOptions = array_filter($this->overriddenOptions);
        $this->parentOptions = array_filter($this->parentOptions);
        $this->extensionOptions = array_filter($this->extensionOptions);
        $this->requiredOptions = $optionsResolver->getRequiredOptions();